User adds a video to my queue

app/controllers/queue_items_controller.rb

@@ -1,7 +1,27 @@
 class QueueItemsController < ApplicationController
 	before_action :require_user
-	
+
 	def index
 		@queue_items = current_user.queue_items
 	end
+
+	def create
+		video = Video.find(params[:video_id])
+		queue_video(video)
+		redirect_to my_queue_path
+	end
+
+	private
+
+	def queue_video(video)
+		QueueItem.create(video: video, user: current_user, position: new_queue_item_position) unless current_user_queued_video?(video)
+	end
+
+	def new_queue_item_position
+		current_user.queue_items.count + 1		
+	end
+
+	def current_user_queued_video?(video)
+		current_user.queue_items.map(&:video).include?(video)
+	end
 end

app/views/queue_items/index.html.haml

@@ -16,8 +16,7 @@
           %tbody
             - @queue_items.each do |queue_item|
               %tr
-                %td
-                  %input.form-control(type="text" value="1")
+                %td= queue_item.position
                 %td
                   = link_to queue_item.video_title, queue_item.video
                 %td

app/views/videos/show.html.haml

@@ -10,7 +10,7 @@
         %p #{@video.description}
         .actions
           %a.btn.btn-primary(href="") Watch Now
-          %a.btn.btn-default(href="") + My Queue
+          = link_to "+ My Queue", queue_items_path(video_id: @video.id), method: :post, class: 'btn btn-default'
 %section.reviews.container
   .row
     .col-sm-10.col-sm-offset-1
@@ -27,7 +27,7 @@
               .col-sm-3
                 = f.text_area :content, rows: 6, cols: 100, class: "span6"
         %fieldset.form-group.actions.clearfix
-          %input(type="submit" value="Submit" class="btn")
+          %input(type="submit" value="Submit" class="btn btn-default")
           = link_to "Cancel", @video
       %header
         %h3 User Reviews (#{@reviews.count})

config/routes.rb

@@ -18,4 +18,5 @@
   resources :categories
   resources :users, only: [:create]
   resources :sessions, only: [:create]
+  resources :queue_items, only: [:create]
 end

spec/controllers/queue_items_controller_spec.rb

@@ -17,4 +17,60 @@
 			expect(response).to redirect_to sign_in_path
 		end
 	end
+
+	describe "POST create" do
+		it "redirects to the my queue page" do
+			session[:user_id] = Fabricate(:user).id
+			video = Fabricate(:video)
+			post :create, video_id: video.id
+			expect(response).to redirect_to my_queue_path
+		end
+
+		it "creates a queue item" do
+			session[:user_id] = Fabricate(:user).id
+			video = Fabricate(:video)
+			post :create, video_id: video.id
+			expect(QueueItem.count).to eq(1)
+		end
+
+		it "creates the queue item that is associated with the video" do
+			session[:user_id] = Fabricate(:user).id
+			video = Fabricate(:video)
+			post :create, video_id: video.id
+			expect(QueueItem.first.video).to eq(video)
+		end
+
+		it "creates the queue item that is associated with the signed in user" do
+			alice = Fabricate(:user)
+			session[:user_id] = alice.id
+			video = Fabricate(:video)
+			post :create, video_id: video.id
+			expect(QueueItem.first.user).to eq(alice)
+		end
+
+		it "puts the video as the last one in the queue" do
+			alice = Fabricate(:user)
+			session[:user_id] = alice.id
+			inception = Fabricate(:video)
+			Fabricate(:queue_item, video: inception, user: alice)
+			gravity = Fabricate(:video)
+			post :create, video_id: gravity.id
+			gravity_queue_item = QueueItem.where(user_id: alice.id, video_id: gravity.id).first
+			expect(gravity_queue_item.position).to eq(2)
+		end
+
+		it "doesn't add the video in the queue if the video is already in the queue" do
+			alice = Fabricate(:user)
+			session[:user_id] = alice.id
+			inception = Fabricate(:video)
+			Fabricate(:queue_item, video: inception, user: alice)
+			post :create, video_id: inception.id
+			expect(alice.queue_items.count).to eq(1)
+		end
+
+		it "redirects to the sign in page for the unauthenticated users" do
+			post :create, video_id: Fabricate(:video).id
+			expect(response).to redirect_to sign_in_path
+		end
+	end
 end